51% (2019)

37% (1991)

78% (1994)

49% (1977)

82% (2006)

83% (1997)

72% (1986)

84% (1990)

82% (2011)

78% (2016)

81% (2018)

76% (1978)

71% (2013)

33% (1999)

77% (2007)

76% (2011)

75% (2005)

78% (1995)

82% (2000)

69% (2007)